What's the most likely cause of a blinking "S" light in the instrument panel on a 91 Hondar accord LX 4-speed Auto with sport-button on shifter. I've not had any problems with the speedometer or cruise. Transmission seems to shift fine. I've got about 130,000 miles on it. I'm debating wether it's time to trade in this car...transmission problems would definitely push me towards that decision! Also, any suggestions on where to get it checked out that they'd have a clue? I don't want to replace a transmission if it's just a sensor I hesitate to bring it to the honda dealer...the local one just LOVES replacing parts that don't have to be. Would the local Canadian Tire have a clue I wonder? Thanks!